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1 2009

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Hydrogenolysis of Glycerol to 1,2-Propanediol over Cu/SiO2 Catalysts Prepared by Ion-Exchange Method

Zheng J., Zhu W. C., Ma C. X., Jia M. J., Wang Z. L., Hou Y. H., Zhang W. X.

Polish Journal of Chemistry

2009

Vol. 83, nr 7

1379-1387

The catalytic properties of supported copper silica prepared by ion-exchange method (denoted as Cu/SiO2-IE) were investigated for the hydrogenolysis of glycerol in a fixed-bed tubular reactor. Compared with the Cu/SiO2 catalyst prepared by wet impregnation and sol-gel methods, Cu/SiO2-IE shows very high activity (99.6 percent conversion of glycerol) and selectivity (86.4 percent to 1,2-propanediol) at 523 K and under hydrogen pressure of 4.0 MPa. The main reason for its good performance in the title reaction may be assigned to the co-existence of two types of active centers, which are the highly dispersed metallic copper and copper ions, on the Cu/SiO2-IE catalysts.